package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Slf4j
@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioClient minioClient;
    @Autowired
    private MinioProperties minioProperties;
    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {

        //创建存储桶
            //判断存储桶是否存在
            boolean bucketExists=minioClient.bucketExists(BucketExistsArgs
                                           .builder()
                                           .bucket(minioProperties.getBucketName())
                                           .build());
            ///不存在则创建
            if(!bucketExists){
                minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
                log.info("创建存储桶成功");
                //设置权限自己写所有人读
                minioClient.setBucketPolicy(SetBucketPolicyArgs.builder()
                                            .bucket(minioProperties.getBucketName())
                                            .config(createBucketPolicyConfig(minioProperties.getBucketName()))
                                            .build());

            }
            //创建文件名
            String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) +
                    "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
            minioClient.putObject(PutObjectArgs
                                        .builder()
                                        .bucket(minioProperties.getBucketName())
                                        .stream(file.getInputStream(), file.getSize(), -1)
                                        .object(filename)
                                        //设置文件类型
                                        .contentType(file.getContentType())
                                        .build());
            //String url = minioProperties.getEndpoint() + "/" + minioProperties.getBucketName() + "/" + filename;
            String url=String.join("/",minioProperties.getEndpoint(),minioProperties.getBucketName(),filename);
            return url;
    }
    private String createBucketPolicyConfig(String bucketName) {

        return """
            {
              "Statement" : [ {
                "Action" : "s3:GetObject",
                "Effect" : "Allow",
                "Principal" : "*",
                "Resource" : "arn:aws:s3:::%s/*"
              } ],
              "Version" : "2012-10-17"
            }
            """.formatted(bucketName);
    }
}
